Italian word binario comes from Latin binus, and later Latin binarius (Containing or consisting of two things. Binary.)

Detailed word origin of binario

Dictionary entry	Language	Definition
binus	Latin (lat)	(chiefly plural) in pairs. (chiefly plural) two each. Double, twofold, binary.
binarius	Latin (lat)	Containing or consisting of two things. Binary.
binario	Italian (ita)	(railway) line, track, platform. Rail, railway, railroad Binary.

Words with the same origin as binario